Monday, 10 July 2017

1.7C: Practical: Investigate the Solubility of a Solid in Water at a Specific Temperature



SOLUBILITY: How much of a substance will dissolve in a given volume of a solvent (shown in the units of g per 100g of solvent)

INVESTIGATING SOLUBILITY OF SOLIDS AT SPECIFIC TEMPERATURES

Diagram showing a Solid in Set Temperature of Water to Measure Solubility
METHOD:

  • Set water bath to specific temperature
  • Use water from water bath and add into Beaker
  • Add solid into the beaker and measure time taken for Solid to dissolve

RESULT:

  • As temperature of Water increases, time taken for Solid to dissolve will decrease (more soluble)
  • This occurs as increase in temperature increases the kinetic energy of particles, overcoming the intermolecular forces of attraction between solid particles
  • This causes particles to break apart, increasing solubility of Solid as a result

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1.2: Understand the Interconversions between the Three States of Matter in Terms of: The Names of the Interconversions, How they are Achieved, the Changes in Arrangement, Movement and Energy of the Particles

INTERCONVERSIONS BETWEEN STATES OF MATTER: Diagram showing the interconversions between the states of matter EXPLANATION: CHANGE EXPLANATION...